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Finding the Fourth Proportional to 6,447.42, 8,899.20 and 3,795.69

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Solution

The fourth proportional to 6,447.42, 8,899.20 and 3,795.69 is: 5,239.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447.42 : 8,899.20 = 3,795.69 : x
  2. Step 2: Convert to fraction form
    6,447.42/8,899.20 = 3,795.69/x
  3. Step 3: Cross multiply
    6,447.42x = 8,899.20 × 3,795.69
  4. Step 4: Simplify right side
    6,447.42x = 33,778,604.45
  5. Step 5: Solve for x
    x = 33,778,604.45/6,447.42
  6. Step 6: Final answer
    x = 5,239.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.